CVE-2023-28116

Description

Contiki-NG is an open-source, cross-platform operating system for internet of things (IoT) devices. In versions 4.8 and prior, an out-of-bounds write can occur in the BLE L2CAP module of the Contiki-NG operating system. The network stack of Contiki-NG uses a global buffer (packetbuf) for processing of packets, with the size of PACKETBUF_SIZE. In particular, when using the BLE L2CAP module with the default configuration, the PACKETBUF_SIZE value becomes larger then the actual size of the packetbuf. When large packets are processed by the L2CAP module, a buffer overflow can therefore occur when copying the packet data to the packetbuf. The vulnerability has been patched in the "develop" branch of Contiki-NG, and will be included in release 4.9. The problem can be worked around by applying the patch manually.

Weakness classification

• security-advisories@github.com: CWE-120
• nvd@nist.gov: CWE-787

Primary references

• security-advisories@github.com — Issue Tracking, Patch
• security-advisories@github.com — Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Patch
• af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory